Send to:

Choose Destination
See comment in PubMed Commons below
Adv Ther. 2012 Sep;29(9):799-814. doi: 10.1007/s12325-012-0046-4. Epub 2012 Aug 24.

SWAAT study: extracorporeal shock wave therapy and arginine supplementation and other nutraceuticals for insertional Achilles tendinopathy.

Author information

  • 1Department of Neuroscience and Organs of Sense, Orthopedics Section, Faculty of Medicine and Surgery of University of Bari, General Hospital, Piazza Giulio Cesare 11, 70124, Bari, Italy.

Erratum in

  • Adv Ther. 2012 Nov;29(11):992.



Extracorporeal shockwave therapy (ESWT) produces good results in the treatment of insertional Achilles tendinopathy. The efficacy of combined administration of dietary supplements with ESWT has not yet been studied.


In this prospective, randomized clinical trial, Shock Waves therapy and Arginine for Achilles Tendinopathy (SWAAT), subjects affected by insertional Achilles tendinopathy were enrolled. Between January and October 2011, all participants underwent three sessions of ESWT. In addition, the patients in the experimental group received a daily dietary supplement containing arginine, Vinitrox (Bio Serae Laboratories SAS, Bram, France), collagen, methyl-sulfonyl-methane, vitamin C, and bromelain, while the control group patients received placebo.


There was no statistically significant difference in the visual analog scale (VAS) score between the two groups at 2 months (3.9 vs. 5.1; P=0.07), whereas at 6 months the value was significantly lower in the experimental group (2.0 vs. 2.9; P=0.04). The difference in the Ankle-Hindfoot Scale score at 2 and 6 months of follow-up (FU) was significantly in favor of the experimental group (2 months: 85.4 vs. 72.1; P=0.0035; 6 months: 92.4 vs. 76.5; P=0.0002). The Roles and Maudsley score also showed a statistically significant difference between the two groups in favor of the experimental arm as regards patient satisfaction (at 2 months: 1.7 vs. 2.8; P<0.0001; at 6 months: 1.5 vs. 2.3; P<0.001). There was a statistically significant reduction in tissue oximetry values compared to baseline in both treatment groups at 2 and 6 months of FU. Comparing the groups, only at the last FU, at 6 months, was a significantly lower oximetry value observed in the experimental group versus controls (60.2 vs. 66.0; P=0.007).


On the basis of the results obtained in this study, the authors conclude that in the treatment of insertional Achilles tendinopathy, ESWT induces a hemodynamic re-equilibrium with an amelioration in tendon trophism [corrected]. The addition of specific dietary supplements could improve the therapeutic response.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Icon for Springer
    Loading ...
    Write to the Help Desk